What is a “Phenobarbital 64 8 mg tablet”?
A “Phenobarbital 64 8 mg tablet” is a dose/formulation label used to describe phenobarbital tablets that contain 8 mg of phenobarbital. “64” typically refers to a specific tablet strength/package identifier used on some listings or prescriptions, but the active ingredient amount is the key clinical detail: 8 mg per tablet.
What is phenobarbital used for?
Phenobarbital is a barbiturate medicine used for seizure (epilepsy) control and is sometimes used for other neurologic conditions depending on the country and prescribing clinician. The exact indication and regimen depend on the patient and local labeling.
How should 8 mg phenobarbital tablets be taken?
Dosing schedules for phenobarbital vary widely by:
- the condition being treated,
- the patient’s age and weight,
- whether the person is taking other anti-seizure medicines,
- liver function and other medical factors.
Because phenobarbital has a long history of use but also a narrow safety margin for some patients, it should be taken exactly as prescribed. Do not adjust dose or stop suddenly without clinician guidance, since seizure control can worsen and withdrawal risks can occur.
What side effects do people ask about most?
Common concerns with phenobarbital include:
- sleepiness, fatigue, dizziness
- unsteadiness or coordination problems
- slowed thinking or behavior changes
More serious but less common effects can include mood changes, skin reactions, or breathing problems—especially if combined with alcohol, opioids, or other sedatives.
What drug interactions are most important?
Phenobarbital can interact with many medicines because it can affect drug-metabolizing enzymes. People often ask about interactions with:
- alcohol
- opioid pain medicines
- sedatives or sleep medications (benzodiazepines and similar drugs)
- other anti-seizure medications
If you tell me what other medications you take, I can help you check likely interaction categories based on general prescribing guidance.
Is this the same as other phenobarbital strengths?
No. Phenobarbital tablets come in multiple strengths in different markets. An “8 mg” tablet is not the same as, for example, 16 mg, 30 mg, 60 mg, or “extended-release” forms. If you’re matching a prescription, the strength in mg and the manufacturer/labeling matter.
Patient safety: when to get urgent help
Seek urgent care or contact emergency services if someone taking phenobarbital has:
- severe drowsiness or confusion
- trouble breathing
- fainting
- signs of an allergic reaction (especially rash with swelling or breathing issues)
Quick clarification so I can be accurate
What do you need exactly—identification for a prescription, instructions, side effects, or interaction checking?
If you can share the country (or the exact text from the label) and any other meds the person takes, I’ll tailor the answer to the right context.